小直径混凝土灌注桩在黑石河桥头引道路基加固中的应用研究

Applied Research on Small Diameter Concrete Cast-in-place Piles in Subgrade Reinforcement of Approach to Heishihe Bridge

通过黑石河桥头引道路基沉降导致路面开裂的成功处理,研究了小间距小直径密集型素混凝土灌注桩复合地基应用技术。应用这种技术能够有效提高软弱地层、松散地层的承载能力,减少路基沉降和差异沉降,达到防止路面破损的目的。

Based on the successful treatment of pavement cracking caused by subgrade settlement of the approach to Heishihe Bridge,the application of small-spacing small-diameter compact plain concrete cast-in-place pile composite foundation was studied.This technology can effectively improve bearing capacity of soft and loose strata,and reduce subgrade settlement and differential settlement,thus prevent the pavement from damages.